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Product attributes Property Value
Manufacturer Power Integrations
Product Series LinkSwitch™-HP
Packaging Tube |
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 725V
Topology Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 64%
Frequency - Switching 120kHz ~ 136kHz
Power (Watts) 47 W
Fault Protection Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit
Control Features -
Operating Temperature -40°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 7-SSIP, 6 Leads, Exposed Pad, Formed Leads
Supplier Device Package eSIP-7C
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LNK6774E from Power Integrations is an isolated Flyback offline switcher with an integrated 725V switch. Part of the LinkSwitch-HP series, it delivers up to 47 W at switching frequencies from 120kHz to 136kHz with a 64% maximum duty cycle. Housed in a 7-SSIP package with exposed pad, it includes current limiting, over load, over temperature, over voltage, and short circuit protection across a -40°C to 150°C junction temperature range.

  • Integrated 725V switch simplifies isolated Flyback designs and reduces external parts.
  • 47 W power capability supports medium-power isolated applications.
  • Comprehensive protection suite including current limiting, over load, over temperature, over voltage, and short circuit.
  • 120kHz to 136kHz switching frequency supports compact transformer designs.
  • Wide -40°C to 150°C junction temperature range suits demanding thermal environments.

Isolated Medium-Power Supplies

The Flyback topology and 47 W power rating make the LNK6774E suitable for isolated medium-power supplies. The integrated 725V switch and 120kHz to 136kHz switching frequency support compact transformer designs with galvanic isolation.

Adapters and Open-Frame Supplies

With a 64% maximum duty cycle and integrated switch, this device supports isolated power conversion in a 7-SSIP package with exposed pad. Current limiting and short circuit protection help maintain safe operation under fault conditions.

Industrial and Appliance Bias

The -40°C to 150°C junction temperature range supports use in demanding thermal environments. Over temperature and over voltage protection add robustness in enclosed designs.

Isolated Auxiliary Rails

Isolated auxiliary rails benefit from the Flyback configuration, which provides galvanic separation between input and output. Over load protection guards against excessive current draw in downstream circuitry.

Q: What topology does the LNK6774E use?
A: It is a Flyback offline switcher in an isolated configuration.
Q: What is the breakdown voltage?
A: The integrated switch is rated to 725V breakdown.
Q: What is the maximum duty cycle?
A: The maximum duty cycle is 64%.
Q: What is the switching frequency?
A: Switching frequency ranges from 120kHz to 136kHz.
Q: How much power can it deliver?
A: It delivers up to 47 W.
Q: What protections are included?
A: Current limiting, over load, over temperature, over voltage, and short circuit protection.
Base Product Number : LNK6774E
120kHz 136kHz 47 W 7-SSIP 725V AC-DC Converter Flyback Converter Isolated LinkSwitch-HP Offline Switcher
Q: What topology does the LNK6774E use?
A: It is a Flyback offline switcher in an isolated configuration.
Q: What is the breakdown voltage?
A: The integrated switch is rated to 725V breakdown.
Q: What is the maximum duty cycle?
A: The maximum duty cycle is 64%.
Q: What is the switching frequency?
A: Switching frequency ranges from 120kHz to 136kHz.
Q: How much power can it deliver?
A: It delivers up to 47 W.
Q: What protections are included?
A: Current limiting, over load, over temperature, over voltage, and short circuit protection.